EP3901348B1 - Elliptic needle loom with sealed housing and box for guiding the crossmember - Google Patents

Elliptic needle loom with sealed housing and box for guiding the crossmember Download PDF

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Publication number
EP3901348B1
EP3901348B1 EP21169004.5A EP21169004A EP3901348B1 EP 3901348 B1 EP3901348 B1 EP 3901348B1 EP 21169004 A EP21169004 A EP 21169004A EP 3901348 B1 EP3901348 B1 EP 3901348B1
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EP
European Patent Office
Prior art keywords
column
rod
needle plate
needle
machine according
Prior art date
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EP21169004.5A
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German (de)
French (fr)
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EP3901348A1 (en
EP3901348C0 (en
Inventor
Frédéric DEMANGE
Eric Potdevin
Jean-Christophe Laune
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Andritz Asselin Thibeau SAS
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Andritz Asselin Thibeau SAS
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Publication of EP3901348A1 publication Critical patent/EP3901348A1/en
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Publication of EP3901348C0 publication Critical patent/EP3901348C0/en
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H18/00—Needling machines
    • D04H18/02—Needling machines with needles
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
    • D06H5/00—Seaming textile materials

Definitions

  • the present invention relates to a needling machine for consolidating by needling a veil or a layer of fibers, in particular of nonwoven, comprising at least one needle board, in front of which the veil or the layer of fibers passes while moving in a feed direction or machine direction or MD, and drive means configured to give the at least one needle board and/or the needles a back and forth movement in the direction perpendicular or substantially perpendicular to the plane of the web or web so that the needles cross in one direction, then in the other, the web or the web of fibers, having an elliptical trajectory.
  • the needle board is secured there to a rod or column which extends along a longitudinal axis and which passes through the wall of a casing by means of a guide pot in which it slides, having a movement at both vertical and in the direction MD thus giving the hands an elliptical trajectory movement, the pot being arranged so as to be able to pivot with respect to an axis extending in the direction CD (i.e. perpendicular to both in the vertical direction and in the MD direction).
  • This needling device of the prior art has the advantage of being able to be received in large part, namely the major part of the column and the drive means of the column, in a sealed casing allowing lubrication of the various parts. and mechanical joints to guarantee increased longevity and reliability of the installation.
  • This needling device however has the disadvantage of being of complex structure, in particular requiring complicated means on the one hand to achieve a phase shift between two eccentric shafts which drive the column to give it an elliptical trajectory movement and on the other hand to seal between the tilting pot and the housing.
  • a needling device comprising a needle board, a column with a vertical axis coupled to the needle board, drive means configured to imparting to the needle board a reciprocating movement so that the needles have an elliptical trajectory, a casing in which a part of the column and drive means are received and a guide pot arranged in an opening of the casing, the column passing through the casing via the guide pot by sliding therein.
  • a needling device comprising a needle board, a column with a vertical axis coupled to the needle board, drive means configured to impart to the needle board a reciprocating movement so that the needles have a vertical trajectory, a casing in which a part of the column and drive means are received and a guide pot disposed in an opening of the casing, the column passing through the casing via the guide pot by sliding there.
  • a needling device is as defined in claim 1, improvements and advantageous embodiments being defined in the subclaims.
  • the drive system according to the invention has the additional advantage that the needles always remain oriented vertically during their elliptical trajectory movement, thus reducing the risk of the needling machine jamming unexpectedly.
  • the first drive means comprise two eccentric connecting rod-shaft systems.
  • the device comprises two columns and two guide pots and the first drive means comprise two connecting rod-eccentric shaft systems, the heads of the connecting rods being articulated to the respective eccentric shafts and the feet of the connecting rods being each hinged to a respective column, the eccentric shafts rotating at the same speed, in opposite directions.
  • the device comprises a column and a guide pot and the first drive means comprise two connecting rod-eccentric shaft systems, the eccentric shafts rotating at the same speed, in opposite directions, the the heads of the connecting rods being articulated to the respective eccentric shafts and the feet of the connecting rods each being articulated to a T-shaped connecting rod, the column being mounted articulated to the intermediate rod of the T.
  • the transverse drive means comprise a control device, which constitutes in itself an invention independent of the invention described above, but which can be combined with the latter, and which comprises: a drive link adapted to be coupled to the needles and/or to the needle board and/or to an element integral with the board or the needles in order to impart to them a back and forth movement in a direction mainly parallel to the direction MD or parallel to the direction MD, an eccentric shaft and a connecting rod, the eccentric shaft driving the connecting rod in rotation along an axis of rotation, in particular which extends along the direction CD perpendicular to the direction MD and to the vertical direction, and the connecting rod being connected to the connecting rod by means of an element forming an intermediate lever pivoting with respect to a pivoting axis, in particular parallel to the axis of rotation of the eccentric shaft, the lever being articulated by a part to the connecting rod, in particular along an axis parallel to the pivot axis and at a distance from the latter, and on the other hand to the drive rod, in particular at
  • control device comprises means for adjusting the reciprocating stroke of the drive rod.
  • the adjustment means adjust the distance between the pivot axis (24) of the lever (23) and the drive rod (27) and/or the distance between the pivot axis (24) of the lever ( 23) and the connecting rod (22).
  • the adjustment means comprise a slider secured to the drive link or to the pivot axis or to the axis of articulation of the link to the lever, the slider and the lever being arranged to allow the slider to slide relative to the lever between several positions, and fixing means for securing the slider to the lever in each of said several positions.
  • the adjustment means comprises a guide slot in which the slider can slide between two extreme positions, in particular a high position in which the drive rod is located at the level of the pivot axis and a low position in which the drive link is as far as possible from the pivot axis, thus allowing, depending on the position in the slot in which the slider is secured to the lever, an adjustment of the amplitude of the movement back and forth of the rod, in particular between a zero amplitude (immobile rod) and a maximum amplitude.
  • the means for fixing the position of the slider in the slot comprise an adjustment rod connected to an adjustment rod, the adjustment rod being articulated to a shaft with an auxiliary eccentric adjustment, the rotation of the adjustment auxiliary shaft allowing adjustment and fixing of the position of the slider in the slot.
  • the means for fixing the position of the slider in the slot comprise an adjustment rod integral with a spiral cam comprising a disk driven in rotation by an auxiliary adjustment shaft in which a slot is formed. spiral along which the adjusting rod can move.
  • the means for fixing the position of the slider in the slot comprise an adjustment rod connected to a adjusting link driven by a jack, allowing linear movement of the adjusting link, the adjusting link being pivotally mounted with respect to the axis of the adjusting rod.
  • FIG. 1 there is shown an embodiment of a needling machine according to the invention.
  • the housing is shown in a sectional view, while the rest of the needling machine is shown in a front view.
  • This needling machine comprises two needle boards 10 comprising needles 1 protruding from the underside of their respective board being arranged either in rows and columns, or randomly or pseudo-randomly, as is well known in the field. .
  • Each needle board 10 is carried by a beam 2, called a moving beam.
  • the respective beam 2 and board 10 are integral with each other, in a removable manner to allow, when the needles are worn and/or broken, to easily replace a board with a new board.
  • the needles are intended to have a back-and-forth movement with an elliptical trajectory from top to bottom and from bottom to top to cross in one direction, then in the other, a sheet or a veil of fibers which are passed in front of it in a direction of 'lead or MD, namely from left to right in the horizontal direction to the figure.
  • Two longitudinal columns 3 extending along a vertical longitudinal axis 11 perpendicular to the plane of the board are each connected to a respective movable beam 2 via two respective vertical intermediate links 9 .
  • Each vertical link 9 is hinged, on the one hand, at its upper end to the lower end of a respective column 3 and, on the other hand, at its lower end to a point 17 of the upper part of a beam 2 respective mobile.
  • First longitudinal drive means are provided to impart to each column 3 a rectilinear back and forth movement in a direction parallel to the longitudinal axis 11, which remains vertical throughout the movement.
  • a sealed casing 7 encloses the first drive means and a part of each column 3, the latter passing through the wall of the casing 7 by passing through respective guide pots 4 .
  • Each guide pot 4 is mounted fixed relative to the housing.
  • Guide rings 18 are arranged on the inner wall of the guide pots 4, to ensure sliding and lubrication between each column 3 and the pot 4 of the respective guide. Sealing between column 3 and guide pot 4 is ensured by a lip seal, not shown, attached to the base of the guide pot.
  • the first longitudinal drive means consist of two systems 6 with eccentric shafts, the shafts of which drive the heads of two connecting rods by rotating at the same speed in opposite directions.
  • the feet of the two connecting rods are mounted hinged to a respective column.
  • first vertical longitudinal drive means make it possible to impart to each column 3 a movement only back and forth along the vertical longitudinal axis.
  • second transverse drive means in the form of a main rod 8 arranged in the direction MD.
  • One end of the connecting rod 8 is hingedly mounted at the point 17 of articulation of the upper part of one of the movable beams 2 to the vertical connecting rod. It is thus imparted to this movable beam 2 a back and forth movement in the direction MD, or substantially in the direction MD (as represented by the double arrow above the link 8 at the figure 1 ).
  • the other end of the connecting rod 8 is coupled to a control system, called the advance system, which can be in particular like those represented below in figures 3 to 5 .
  • an auxiliary link 20 is articulated on the one hand to the end of the main link 8, in particular at point 17 of the mobile beam 2, and on the other hand to the other mobile part, thus also transmitting to the latter the back and forth movement towards MD.
  • FIG. 2 To the picture 2 , there is shown another embodiment of a needling machine according to the invention.
  • the housing is shown in a sectional view, while the rest of the needling machine is shown in a front view.
  • This needling machine comprises a needle board 10' comprising needles 1' protruding from the underside of their respective board being arranged either in rows and columns, or randomly or pseudo-randomly, as is well known in the domain.
  • the needle board 10' is carried by a beam 2', called the moving beam.
  • the beam 2' and board 10' are integral with each other, in a removable manner to allow, when the needles are worn and/or broken, to easily replace a board with a new board.
  • the needles are intended to have a back and forth movement with an elliptical trajectory from top to bottom and from bottom to top to cross in one direction, then in the other, a sheet or a veil of fibers which are made pass in front of it in a direction of lead or MD, namely from left to right in the horizontal direction to the figure.
  • a longitudinal column 3' extending along a vertical longitudinal axis 11' perpendicular to the plane of the board, is connected to the movable beam 2' via a vertical intermediate link.
  • the vertical rod is hinged, on the one hand, at its upper end to the lower end of the column 3' and, on the other hand, at its lower end to a point 17' of the upper part of the beam 2' mobile.
  • First longitudinal drive means are provided to impart to column 3' a rectilinear back and forth movement in a direction parallel to longitudinal axis 11', which remains vertical throughout the movement.
  • a sealed casing 7' encloses the first drive means and part of the column 3', the latter passing through the wall of the casing 7' by passing through a respective guide pot 4'.
  • the guide pot 4' is mounted fixed relative to the casing.
  • the column 3' during its movement back and forth vertically, slides inside the guide pot 4'.
  • Guide rings 18 are arranged on the inner wall of the guide pot 4', to ensure sliding and lubrication between the column 3' and the guide pot 4'. Sealing between column 3' and guide pot 4' is ensured by a lip seal, not shown, attached to the base of the guide pot.
  • the first longitudinal drive means consist of two eccentric shaft systems 6', the shafts of which drive the heads of two connecting rods by rotating at the same speed in opposite directions.
  • the feet of the two connecting rods are mounted articulated to a respective one of the side branches of a connecting rod 19 in T, while the main branch or rod of the connecting rod in T is mounted articulated to the column 3'.
  • These first vertical longitudinal drive means make it possible to impart to the column 3' a movement only back and forth along the vertical longitudinal axis.
  • Second transverse drive means are also provided in the form of a main connecting rod 8' arranged in the direction MD.
  • One end of the connecting rod 8' is mounted articulated at the point 17' of articulation of the upper part of the movable beam 2' to the vertical connecting rod.
  • This mobile beam 2' is thus given a back and forth movement in the direction MD, or substantially in the direction MD (as represented by the double arrow above the link 8' at the picture 2 ).
  • the other end of the connecting rod 8' is coupled to a control system, called the advance system, which can be in particular like those represented below in figures 3 to 5 .
  • FIG. 3 To figure 3 , 3A , 3B , 4A , 4B And 5 , there are shown embodiments of a system that can be used to control the reciprocating movement in the direction MD of the main link 8 of the embodiment of the figure 1 .
  • this control system is not necessary in itself and other control systems for moving back and forth in the direction MD of the link 8 known in the prior art can be used, for example systems such as those described in EP-A1-1736586 , EP-B1-3372716 , FR2738846 , US6161269 and the like.
  • the system comprises an eccentric shaft 21 coupled to a connecting rod 22 mounted articulated directly to a vertical lever 23 in one piece (or possibly consisting of several elements which are not articulated together) arranged to pivot relative to an axis 24 fixed pivot offset, in the vertical direction, below the axis of articulation of the connecting rod 22 to the lever 23.
  • a connecting rod 27 is coupled directly to the lever 23.
  • the connecting rod 27 is secured to a slider 25 and to one end of a rod 26 whose axis extends parallel to the axis 24.
  • the relative position of the rod 26, and therefore also of the link 27, with respect to the pivot axis 24 of the lever along the vertical direction and/or with respect to the axis of articulation of the link 22 at the lever can be adjusted by means of an adjustment system consisting of an eccentric shaft 29 auxiliary adjustment and a rod 28 adjustment.
  • the adjusting rod 28 is articulatedly coupled at its upper end to the eccentric shaft (or crankshaft) 29, while its lower end is pivotally mounted relative to the axis of the rod 26.
  • the lever has an opening in the form of a slot 30, in which slides the slider 25 integral in translation with the rod 26.
  • the amplitude of the back and forth movement of the link 27 can be varied both when running and when stopped, the movement reflected from the movement of the crankshaft 21 and the link 22 acting on the lever 23.
  • the link 27 it can be secured or articulated to the main link of the embodiment of the figure 1 And 2 .
  • FIG. 3A there is shown a variant of the arrangement of the picture 3 .
  • the adjustment of the distance between the connecting rod 22 and the driving connecting rod 27 is carried out by adjusting the position along the slot 30 of the axis 31 of articulation of the connecting rod 22 on the lever 23 , which makes it possible to adjust the distance between the axis 31 of articulation of the link 22 and the fixed axis 24 of pivoting of the lever, and therefore also to adjust the distance between the axis 31 and the link 27, the distance between the link 27 and the axis 24 being, in this variant, fixed, whereas in the embodiment of the picture 3 , it is the distance between the axis 31 and the axis 24 which is fixed.
  • FIG. 3B there is shown a variant of the arrangement of the picture 3 .
  • the adjustment of the distance between the connecting rod 22 and the driving rod 27 is carried out by adjusting the position along a slot 30' formed in the lever 23 of the fixed pivot axis 24 of the lever.
  • the axis 24 of the lever is integral with a slider 25' mounted to slide in the slot 30'.
  • the connecting rod 22 is articulated to the lever 23 along an axis 31 of articulation which is in a fixed position on the lever 23.
  • the end of articulation of the connecting rod 27 to the lever 23 is in a fixed position (as in the embodiment of there picture 3 ).
  • the rod 26 from the rod 28 adjustment is articulated to the lever 23 in a fixed position.
  • FIG 4A And 4B there is shown another embodiment.
  • the main difference between the embodiment of the picture 3 and that of figure 4A And 4B is the way in which the position of the slider 25 is adjusted with respect to the slot 30.
  • a spiral cam is used, consisting of a disc 40 in which is provided a spiral-shaped slot along which the rod 26 can move.
  • the rod 26 follows the profile of the slot 30, which has the effect of moving the rod 26 and therefore the slider 25 along the slot.
  • a given maximum back and forth stroke is obtained for the link 27.
  • FIG. 5 there is shown yet another embodiment, in which a cylinder 41 is used instead of the crankshaft 29 of the picture 3 , the rest of the embodiment being identical.
  • the first drive means made using two eccentric shaft systems to achieve a purely longitudinal movement of the column.
  • Other means can be envisaged, for example a jack system or an eccentric camshaft.

Description

La présente invention se rapporte à une aiguilleteuse pour consolider par aiguilletage un voile ou une nappe de fibres, notamment de non-tissé, comportant au moins une planche à aiguilles, en face de laquelle le voile ou la nappe de fibres passe en se déplaçant dans une direction d'avance ou direction machine ou MD, et des moyens d'entraînement configurés pour donner à la au moins une planche à aiguilles et/ou aux aiguilles un mouvement en va et vient dans la direction perpendiculaire ou sensiblement perpendiculaire au plan de la nappe ou du voile pour que les aiguilles traversent dans un sens, puis dans l'autre, le voile ou la nappe de fibres, en ayant une trajectoire elliptique.The present invention relates to a needling machine for consolidating by needling a veil or a layer of fibers, in particular of nonwoven, comprising at least one needle board, in front of which the veil or the layer of fibers passes while moving in a feed direction or machine direction or MD, and drive means configured to give the at least one needle board and/or the needles a back and forth movement in the direction perpendicular or substantially perpendicular to the plane of the web or web so that the needles cross in one direction, then in the other, the web or the web of fibers, having an elliptical trajectory.

On connaît, par exemple de EP 1 736 587 au nom de la demanderesse, une aiguilleteuse de ce genre. La planche à aiguilles y est solidaire d'une tige ou colonne qui s'étend suivant un axe longitudinal et qui traverse la paroi d'un carter par l'intermédiaire d'un pot de guidage dans lequel elle coulisse, en ayant un mouvement à la fois vertical et dans la direction MD pour ainsi donner aux aiguilles un mouvement à trajectoire elliptique, le pot étant agencé de manière à pouvoir pivoter par rapport à un axe s'étendant dans la direction CD (c'est-à-dire perpendiculaire à la fois à la direction verticale et à la direction MD).We know, for example, of EP 1 736 587 on behalf of the plaintiff, a needle maker of this type. The needle board is secured there to a rod or column which extends along a longitudinal axis and which passes through the wall of a casing by means of a guide pot in which it slides, having a movement at both vertical and in the direction MD thus giving the hands an elliptical trajectory movement, the pot being arranged so as to be able to pivot with respect to an axis extending in the direction CD (i.e. perpendicular to both in the vertical direction and in the MD direction).

Ce dispositif d'aiguilletage de l'art antérieur présente l'avantage de pouvoir être reçu en grande partie, à savoir la majeure partie de la colonne et les moyens d'entraînement de la colonne, dans un carter étanche permettant une lubrification des différentes pièces et articulations mécaniques pour garantir une longévité et une fiabilité accrues de l'installation.This needling device of the prior art has the advantage of being able to be received in large part, namely the major part of the column and the drive means of the column, in a sealed casing allowing lubrication of the various parts. and mechanical joints to guarantee increased longevity and reliability of the installation.

Ce dispositif d'aiguilletage présente cependant l'inconvénient d'être de structure complexe, nécessitant notamment des moyens compliqués d'une part pour réaliser un déphasage entre deux arbres à excentrique qui entraînent la colonne pour lui donner un mouvement à trajectoire elliptique et d'autre part pour réaliser l'étanchéité entre le pot basculant et le carter.This needling device however has the disadvantage of being of complex structure, in particular requiring complicated means on the one hand to achieve a phase shift between two eccentric shafts which drive the column to give it an elliptical trajectory movement and on the other hand to seal between the tilting pot and the housing.

De FR2800396A1 , FR2862988A1 et GB2335931A , on connait un dispositif d'aiguilletage comportant une planche à aiguilles, une colonne d'axe vertical couplée à la planche à aiguilles, des moyens d'entraînement configurés pour impartir à la planche à aiguilles un mouvement de va-et-vient de sorte que les aiguilles aient une trajectoire elliptique, un carter dans lequel sont reçus une partie de la colonne et des moyens d'entraînement et un pot de guidage disposé dans une ouverture du carter, la colonne traversant le carter par l'intermédiaire du pot de guidage en y coulissant.Of FR2800396A1 , FR2862988A1 And GB2335931A , a needling device is known comprising a needle board, a column with a vertical axis coupled to the needle board, drive means configured to imparting to the needle board a reciprocating movement so that the needles have an elliptical trajectory, a casing in which a part of the column and drive means are received and a guide pot arranged in an opening of the casing, the column passing through the casing via the guide pot by sliding therein.

De WO96/21764A1 , on connait un dispositif d'aiguilletage comportant une planche à aiguilles, une colonne d'axe vertical couplée à la planche à aiguilles, des moyens d'entraînement configurés pour impartir à la planche à aiguilles un mouvement de va-et-vient de sorte que les aiguilles aient une trajectoire verticale, un carter dans lequel sont reçus une partie de la colonne et des moyens d'entraînement et un pot de guidage disposé dans une ouverture du carter, la colonne traversant le carter par l'intermédiaire du pot de guidage en y coulissant.Of WO96/21764A1 , a needling device is known comprising a needle board, a column with a vertical axis coupled to the needle board, drive means configured to impart to the needle board a reciprocating movement so that the needles have a vertical trajectory, a casing in which a part of the column and drive means are received and a guide pot disposed in an opening of the casing, the column passing through the casing via the guide pot by sliding there.

On aimerait avoir à disposition un dispositif d'aiguilletage qui présente le même avantage de pouvoir être reçu dans un carter étanche permettant d'assurer une bonne lubrification des différentes pièces d'entraînement de la colonne, tout en étant cependant de structure plus compacte et moins complexe, et qui en outre présente une meilleure fiabilité, et en particulier soit moins susceptible d'être bloqué de manière inopinée pendant son fonctionnement.We would like to have available a needling device which has the same advantage of being able to be received in a sealed casing making it possible to ensure good lubrication of the various driving parts of the column, while however being of a more compact structure and less complex, and which also has better reliability, and in particular is less likely to be blocked unexpectedly during its operation.

Suivant l'invention, un dispositif d'aiguilletage est tel que défini à la revendication 1, des perfectionnements et modes de réalisation avantageux étant définis aux sous revendications.According to the invention, a needling device is as defined in claim 1, improvements and advantageous embodiments being defined in the subclaims.

Suivant l'invention, on obtient ainsi un système moins complexe que ceux de l'art antérieur, notamment d'un point de vue mécanique, et qui en outre est plus compact. En particulier, il n'est plus nécessaire de réaliser un déphasage entre deux arbres à excentrique. Dans le même temps, on conserve la possibilité d'intégrer une grande partie des moyens d'entraînement et de la au moins une colonne dans un carter étanche permettant la lubrification des différentes pièces mécaniques pour assurer ainsi une grande longévité et fiabilité de l'installation. En outre, le système d'entraînement suivant l'invention présente l'avantage supplémentaire que les aiguilles restent toujours orientées à la verticale pendant leur mouvement à trajectoire elliptique, diminuant ainsi le risque d'un blocage inopiné de l'aiguilleteuse.According to the invention, a less complex system is thus obtained than those of the prior art, in particular from a mechanical point of view, and which is moreover more compact. In particular, it is no longer necessary to achieve a phase shift between two eccentric shafts. At the same time, the possibility is retained of integrating a large part of the drive means and of the at least one column in a sealed casing allowing the lubrication of the various mechanical parts to thus ensure a long service life and reliability of the installation. . In addition, the drive system according to the invention has the additional advantage that the needles always remain oriented vertically during their elliptical trajectory movement, thus reducing the risk of the needling machine jamming unexpectedly.

Suivant un mode de réalisation préféré de l'invention, les premiers moyens d'entraînement comportent deux systèmes bielle-arbre à excentrique.According to a preferred embodiment of the invention, the first drive means comprise two eccentric connecting rod-shaft systems.

Suivant un mode de réalisation favorable, le dispositif comporte deux colonnes et deux pots de guidage et les premiers moyens d'entraînement comportent deux systèmes bielle-arbre à excentrique, les têtes des bielles étant articulées aux arbres à excentrique respectifs et les pieds des bielles étant chacun articulés à une colonne respective, les arbres à excentrique tournant à la même vitesse, dans des sens opposés.According to a favorable embodiment, the device comprises two columns and two guide pots and the first drive means comprise two connecting rod-eccentric shaft systems, the heads of the connecting rods being articulated to the respective eccentric shafts and the feet of the connecting rods being each hinged to a respective column, the eccentric shafts rotating at the same speed, in opposite directions.

Suivant un autre mode de réalisation favorable, le dispositif comporte une colonne et un pot de guidage et les premiers moyens d'entraînement comportent deux systèmes bielle-arbre à excentrique, les arbres à excentrique tournant à la même vitesse, dans des sens opposés, les têtes des bielles étant articulées aux arbres à excentrique respectifs et les pieds des bielles étant chacun articulés à une biellette en T, la colonne étant montée articulée à la tige intermédiaire du T.According to another favorable embodiment, the device comprises a column and a guide pot and the first drive means comprise two connecting rod-eccentric shaft systems, the eccentric shafts rotating at the same speed, in opposite directions, the the heads of the connecting rods being articulated to the respective eccentric shafts and the feet of the connecting rods each being articulated to a T-shaped connecting rod, the column being mounted articulated to the intermediate rod of the T.

Suivant un mode de réalisation avantageux, les moyens d'entraînement transversal comportent un dispositif de commande, qui constitue en soi une invention indépendante de l'invention décrite ci-dessus, mais qui peut être combinée avec celle-ci, et qui comporte : une biellette d'entraînement apte à être couplée aux aiguilles et/ou à la planche à aiguille et/ou à un élément solidaire de la planche ou des aiguilles pour leur impartir un mouvement de va et vient suivant une direction principalement parallèle à la direction MD ou parallèle à la direction MD, un arbre à excentrique et une bielle, l'arbre à excentrique entraînant la bielle en rotation suivant un axe de rotation, notamment qui s'étend suivant la direction CD perpendiculaire à la direction MD et à la direction verticale, et la bielle étant reliée à la biellette par l'intermédiaire d'un élément formant levier intermédiaire pivotant par rapport à un axe de pivotement, notamment parallèle à l'axe de rotation de l'arbre à excentrique, le levier étant articulé d'une part à la bielle, notamment suivant un axe parallèle à l'axe de pivotement et à distance de celui-ci, et d'autre part à la biellette d'entraînement, notamment en un point à distance de l'axe de pivotement, pour impartir à celle-ci le mouvement de va et vient suivant la direction MD.According to an advantageous embodiment, the transverse drive means comprise a control device, which constitutes in itself an invention independent of the invention described above, but which can be combined with the latter, and which comprises: a drive link adapted to be coupled to the needles and/or to the needle board and/or to an element integral with the board or the needles in order to impart to them a back and forth movement in a direction mainly parallel to the direction MD or parallel to the direction MD, an eccentric shaft and a connecting rod, the eccentric shaft driving the connecting rod in rotation along an axis of rotation, in particular which extends along the direction CD perpendicular to the direction MD and to the vertical direction, and the connecting rod being connected to the connecting rod by means of an element forming an intermediate lever pivoting with respect to a pivoting axis, in particular parallel to the axis of rotation of the eccentric shaft, the lever being articulated by a part to the connecting rod, in particular along an axis parallel to the pivot axis and at a distance from the latter, and on the other hand to the drive rod, in particular at a point at a distance from the pivot axis, for impart to it the back and forth movement in the direction MD.

De préférence, le dispositif de commande comporte des moyens de réglage de la course de va et vient de la biellette d'entraînement.Preferably, the control device comprises means for adjusting the reciprocating stroke of the drive rod.

En particulier, les moyens de réglage règlent la distance entre l'axe (24) de pivotement du levier (23) et la biellette (27) d'entraînement et/ou la distance entre l'axe (24) de pivotement du levier (23) et la bielle (22).In particular, the adjustment means adjust the distance between the pivot axis (24) of the lever (23) and the drive rod (27) and/or the distance between the pivot axis (24) of the lever ( 23) and the connecting rod (22).

Suivant un mode de réalisation préféré, les moyens de réglage comportent un coulisseau solidaire de la biellette d'entraînement ou de l'axe de pivotement ou de l'axe d'articulation de la bielle au levier, le coulisseau et le levier étant agencés pour permettre au coulisseau de coulisser par rapport au levier entre plusieurs positions, et des moyens de fixation pour solidariser le coulisseau au levier dans chacune des dites plusieurs positions.According to a preferred embodiment, the adjustment means comprise a slider secured to the drive link or to the pivot axis or to the axis of articulation of the link to the lever, the slider and the lever being arranged to allow the slider to slide relative to the lever between several positions, and fixing means for securing the slider to the lever in each of said several positions.

Suivant un mode de réalisation très favorable, les moyens de réglage comporte une fente de guidage dans laquelle le coulisseau peut coulisser entre deux positions extrêmes, notamment une position haute dans laquelle la biellette d'entraînement se trouve au niveau de l'axe de pivotement et une position basse dans laquelle la biellette d'entraînement est la plus éloignée possible de l'axe de pivotement, permettant ainsi, en fonction de la position dans la fente dans laquelle le coulisseau est solidarisé au levier, un réglage de l'amplitude du mouvement de va et vient de la biellette, notamment entre une amplitude nulle (biellette immobile) et une amplitude maximale.According to a very favorable embodiment, the adjustment means comprises a guide slot in which the slider can slide between two extreme positions, in particular a high position in which the drive rod is located at the level of the pivot axis and a low position in which the drive link is as far as possible from the pivot axis, thus allowing, depending on the position in the slot in which the slider is secured to the lever, an adjustment of the amplitude of the movement back and forth of the rod, in particular between a zero amplitude (immobile rod) and a maximum amplitude.

Suivant un mode de réalisation préféré, les moyens de fixation de la position du coulisseau dans la fente comportent une tige de réglage reliée à une biellette de réglage, la biellette de réglage étant articulée à un arbre à excentrique auxiliaire de réglage, la rotation de l'arbre auxiliaire de réglage permettant le réglage et la fixation de la position du coulisseau dans la fente.According to a preferred embodiment, the means for fixing the position of the slider in the slot comprise an adjustment rod connected to an adjustment rod, the adjustment rod being articulated to a shaft with an auxiliary eccentric adjustment, the rotation of the adjustment auxiliary shaft allowing adjustment and fixing of the position of the slider in the slot.

Suivant un autre mode de réalisation favorable, les moyens de fixation de la position du coulisseau dans la fente comportent une tige de réglage solidaire d'une came à spirale comportant un disque entraîné en rotation par un arbre auxiliaire de réglage dans lequel est ménagé une fente en spirale le long de laquelle la tige de réglage peut se déplacer.According to another favorable embodiment, the means for fixing the position of the slider in the slot comprise an adjustment rod integral with a spiral cam comprising a disk driven in rotation by an auxiliary adjustment shaft in which a slot is formed. spiral along which the adjusting rod can move.

Suivant encore une autre variante favorable, les moyens de fixation de la position du coulisseau dans la fente comportent une tige de réglage reliée à une biellette de réglage entraînée par un vérin, permettant un déplacement linéaire de la biellette de réglage, la biellette de réglage étant montée pivotante par rapport à l'axe de la tige de réglage.According to yet another favorable variant, the means for fixing the position of the slider in the slot comprise an adjustment rod connected to a adjusting link driven by a jack, allowing linear movement of the adjusting link, the adjusting link being pivotally mounted with respect to the axis of the adjusting rod.

A titre d'exemple, on décrit maintenant des modes de réalisation préférés de l'invention en se reportant aux dessins dans lesquels :

  • La figure 1 est une vue d'ensemble de face partiellement en coupe, d'un dispositif d'aiguilletage suivant un mode de réalisation de l'invention ;
  • La figure 2 est une vue d'ensemble de face partiellement en coupe, d'un dispositif d'aiguilletage suivant un autre mode de réalisation de l'invention ;
  • La figure 3 est une vue d'ensemble en perspective du système d'entraînement ou de commande de la biellette auxiliaire ;
  • La figure 3A est une vue d'ensemble en perspective d'un autre mode de réalisation d'un système de commande suivant l'invention ;
  • La figure 3B est une vue d'ensemble en perspective d'encore un autre mode de réalisation d'un système de commande suivant l'invention ;
  • La figure 4A est une vue d'ensemble d'une variante du système de la figure 3 ;
  • La figure 4B est une vue de l'arrière de la variante de la figure 4A ; et
  • La figure 5 est une vue d'ensemble d'encore une autre variante du système des figures 3, 4A et 4B.
By way of example, preferred embodiments of the invention will now be described with reference to the drawings in which:
  • There figure 1 is a front assembly view, partially in section, of a needling device according to one embodiment of the invention;
  • There picture 2 is a front assembly view, partially in section, of a needling device according to another embodiment of the invention;
  • There picture 3 is an overall perspective view of the auxiliary link drive or control system;
  • There Figure 3A is an overall perspective view of another embodiment of a control system according to the invention;
  • There Figure 3B is an overall perspective view of yet another embodiment of a control system according to the invention;
  • There figure 4A is an overview of a variant of the system of the picture 3 ;
  • There figure 4B is a rear view of the variant of the figure 4A ; And
  • There figure 5 is an overview of yet another variant of the system of figure 3 , 4A And 4B .

A la figure 1, il est représenté un mode de réalisation d'une aiguilleteuse suivant l'invention. Le carter est représenté suivant une vue en coupe, tandis que le reste de l'aiguilleteuse est représenté suivant vue de face.To the figure 1 , there is shown an embodiment of a needling machine according to the invention. The housing is shown in a sectional view, while the rest of the needling machine is shown in a front view.

Cette aiguilleteuse comporte deux planches 10 à aiguilles comportant des aiguilles 1 faisant saillie de la face inférieure de leur planche respective en étant agencées soit suivant des rangées et des colonnes, soit de manière aléatoire ou pseudo-aléatoire, comme il est bien connu dans le domaine. Chaque planche 10 à aiguilles est portée par une poutre 2, dite poutre mobile. Les poutre 2 et planche 10 respectives sont solidaires l'une de l'autre, de manière amovible pour permettre, lorsque les aiguilles sont usées et/ou cassées, de remplacer facilement une planche par une nouvelle planche. Les aiguilles sont destinées à avoir un mouvement de va-et-vient à trajectoire elliptique de haut en bas et de bas en haut pour traverser dans un sens, puis dans l'autre, une nappe ou un voile de fibres que l'on fait passer devant elle dans une direction d'amenée ou MD, à savoir de gauche à droite en direction horizontale à la figure.This needling machine comprises two needle boards 10 comprising needles 1 protruding from the underside of their respective board being arranged either in rows and columns, or randomly or pseudo-randomly, as is well known in the field. . Each needle board 10 is carried by a beam 2, called a moving beam. The respective beam 2 and board 10 are integral with each other, in a removable manner to allow, when the needles are worn and/or broken, to easily replace a board with a new board. The needles are intended to have a back-and-forth movement with an elliptical trajectory from top to bottom and from bottom to top to cross in one direction, then in the other, a sheet or a veil of fibers which are passed in front of it in a direction of 'lead or MD, namely from left to right in the horizontal direction to the figure.

Deux colonnes 3 longitudinales s'étendant suivant un axe 11 longitudinal vertical perpendiculaire au plan de la planche sont chacune reliée à une poutre 2 mobile respective par l'intermédiaire de deux biellettes 9 intermédiaires verticales respectives.Two longitudinal columns 3 extending along a vertical longitudinal axis 11 perpendicular to the plane of the board are each connected to a respective movable beam 2 via two respective vertical intermediate links 9 .

Chaque biellette 9 verticale est articulée, d'une part, à son extrémité supérieure à l'extrémité inférieure d'une colonne 3 respective et, d'autre part, à son extrémité inférieure à un point 17 de la partie supérieure d'une poutre 2 mobile respective.Each vertical link 9 is hinged, on the one hand, at its upper end to the lower end of a respective column 3 and, on the other hand, at its lower end to a point 17 of the upper part of a beam 2 respective mobile.

Des premiers moyens d'entraînement longitudinal sont prévus pour impartir à chaque colonne 3 un mouvement de va et vient rectiligne suivant une direction parallèle à l'axe 11 longitudinal, qui reste vertical pendant tout le mouvement.First longitudinal drive means are provided to impart to each column 3 a rectilinear back and forth movement in a direction parallel to the longitudinal axis 11, which remains vertical throughout the movement.

Un carter 7 étanche enferme les premiers moyens d'entraînement et une partie de chaque colonne 3, ces dernières traversant la paroi du carter 7 en traversant des pots 4 de guidage respectifs. Chaque pot 4 de guidage est monté fixe par rapport au carter. Chaque colonne 3, lors de son mouvement en va et vient vertical, coulisse à l'intérieur du pot 4 de guidage respectif. Des bagues 18 de guidage sont disposées sur la paroi intérieure des pots 4 de guidage, pour assurer le glissement et la lubrification entre chaque colonne 3 et le pot 4 de guidage respectif. L'étanchéité entre la colonne 3 et le pot 4 de guidage est assuré par un joint d'étanchéité à lèvre non représenté fixé à la base du pot de guidage.A sealed casing 7 encloses the first drive means and a part of each column 3, the latter passing through the wall of the casing 7 by passing through respective guide pots 4 . Each guide pot 4 is mounted fixed relative to the housing. Each column 3, during its movement back and forth vertically, slides inside the pot 4 of the respective guide. Guide rings 18 are arranged on the inner wall of the guide pots 4, to ensure sliding and lubrication between each column 3 and the pot 4 of the respective guide. Sealing between column 3 and guide pot 4 is ensured by a lip seal, not shown, attached to the base of the guide pot.

Les premiers moyens d'entraînement longitudinal sont constitués de deux systèmes 6 à arbres à excentrique, dont les arbres entraînent les têtes de deux bielles en tournant à même vitesse dans des sens opposés. Les pieds des deux bielles sont montés articulés à une colonne respective.The first longitudinal drive means consist of two systems 6 with eccentric shafts, the shafts of which drive the heads of two connecting rods by rotating at the same speed in opposite directions. The feet of the two connecting rods are mounted hinged to a respective column.

Ces premiers moyens d'entraînement longitudinal vertical permettent d'impartir à chaque colonne 3 un mouvement uniquement en va-et-vient suivant l'axe longitudinal vertical.These first vertical longitudinal drive means make it possible to impart to each column 3 a movement only back and forth along the vertical longitudinal axis.

Il est prévu en outre des deuxièmes moyens d'entraînement transversal sous la forme d'une biellette 8 principale disposée suivant la direction MD. Une extrémité de la biellette 8 est montée articulée au point 17 d'articulation de la partie supérieure de l'une des poutres 2 mobiles à la biellette verticale. Il est ainsi imparti à cette poutre mobile 2 un mouvement en va et vient suivant la direction MD, ou sensiblement suivant la direction MD (comme représenté par la double flèche au-dessus de la biellette 8 à la figure 1). L'autre extrémité de la biellette 8 est couplée à un système de commande, appelé système d'avance, qui peut être notamment comme ceux représentés ci-après aux figures 3 à 5. En outre, une biellette 20 auxiliaire est articulée d'une part à l'extrémité de la biellette 8 principale, notamment au point 17 de la poutre 2 mobile, et d'autre part à l'autre partie mobile, pour ainsi transmettre également à cette dernière le mouvement de va et vient en direction MD.There is also provided second transverse drive means in the form of a main rod 8 arranged in the direction MD. One end of the connecting rod 8 is hingedly mounted at the point 17 of articulation of the upper part of one of the movable beams 2 to the vertical connecting rod. It is thus imparted to this movable beam 2 a back and forth movement in the direction MD, or substantially in the direction MD (as represented by the double arrow above the link 8 at the figure 1 ). The other end of the connecting rod 8 is coupled to a control system, called the advance system, which can be in particular like those represented below in figures 3 to 5 . In addition, an auxiliary link 20 is articulated on the one hand to the end of the main link 8, in particular at point 17 of the mobile beam 2, and on the other hand to the other mobile part, thus also transmitting to the latter the back and forth movement towards MD.

A la figure 2, il est représenté un autre mode de réalisation d'une aiguilleteuse suivant l'invention. Le carter est représenté suivant une vue en coupe, tandis que le reste de l'aiguilleteuse est représenté suivant une vue de face.To the picture 2 , there is shown another embodiment of a needling machine according to the invention. The housing is shown in a sectional view, while the rest of the needling machine is shown in a front view.

Cette aiguilleteuse comporte une planche 10' à aiguilles comportant des aiguilles 1' faisant saillie de la face inférieure de leur planche respective en étant agencées soit suivant des rangées et des colonnes, soit de manière aléatoire ou pseudo-aléatoire, comme il est bien connu dans le domaine. La planche 10' à aiguilles est portée par une poutre 2', dite poutre mobile. Les poutre 2' et planche 10' sont solidaires l'une de l'autre, de manière amovible pour permettre, lorsque les aiguilles sont usées et/ou cassées, de remplacer facilement une planche par une nouvelle planche. Les aiguilles sont destinées à avoir un mouvement de va-et-vient à trajectoire elliptique de haut en bas et de bas en haut pour traverser dans un sens, puis dans l'autre, une nappe ou un voile de fibres que l'on fait passer devant elle dans une direction d'amenée ou MD, à savoir de gauche à droite en direction horizontale à la figure.This needling machine comprises a needle board 10' comprising needles 1' protruding from the underside of their respective board being arranged either in rows and columns, or randomly or pseudo-randomly, as is well known in the domain. The needle board 10' is carried by a beam 2', called the moving beam. The beam 2' and board 10' are integral with each other, in a removable manner to allow, when the needles are worn and/or broken, to easily replace a board with a new board. The needles are intended to have a back and forth movement with an elliptical trajectory from top to bottom and from bottom to top to cross in one direction, then in the other, a sheet or a veil of fibers which are made pass in front of it in a direction of lead or MD, namely from left to right in the horizontal direction to the figure.

Une colonne 3' longitudinale, s'étendant suivant un axe 11' longitudinal vertical perpendiculaire au plan de la planche, est reliée à la poutre 2' mobile par l'intermédiaire d'une biellette intermédiaire verticale.A longitudinal column 3', extending along a vertical longitudinal axis 11' perpendicular to the plane of the board, is connected to the movable beam 2' via a vertical intermediate link.

La biellette verticale est articulée, d'une part, à son extrémité supérieure à l'extrémité inférieure de la colonne 3' et, d'autre part, à son extrémité inférieure à un point 17' de la partie supérieure de la poutre 2' mobile.The vertical rod is hinged, on the one hand, at its upper end to the lower end of the column 3' and, on the other hand, at its lower end to a point 17' of the upper part of the beam 2' mobile.

Des premiers moyens d'entraînement longitudinal sont prévus pour impartir à la colonne 3' un mouvement de va et vient rectiligne suivant une direction parallèle à l'axe 11' longitudinal, qui reste vertical pendant tout le mouvement.First longitudinal drive means are provided to impart to column 3' a rectilinear back and forth movement in a direction parallel to longitudinal axis 11', which remains vertical throughout the movement.

Un carter 7' étanche enferme les premiers moyens d'entraînement et une partie de la colonne 3', cette dernière traversant la paroi du carter 7' en traversant un pot 4' de guidage respectif. Le pot 4' de guidage est monté fixe par rapport au carter. La colonne 3', lors de son mouvement en va et vient vertical, coulisse à l'intérieur du pot 4' de guidage. Des bagues 18 de guidage sont disposées sur la paroi intérieure du pot 4' de guidage, pour assurer le glissement et la lubrification entre la colonne 3' et le pot 4' de guidage. L'étanchéité entre la colonne 3' et le pot 4' de guidage est assuré par un joint d'étanchéité à lèvre non représenté fixé à la base du pot de guidage.A sealed casing 7' encloses the first drive means and part of the column 3', the latter passing through the wall of the casing 7' by passing through a respective guide pot 4'. The guide pot 4' is mounted fixed relative to the casing. The column 3', during its movement back and forth vertically, slides inside the guide pot 4'. Guide rings 18 are arranged on the inner wall of the guide pot 4', to ensure sliding and lubrication between the column 3' and the guide pot 4'. Sealing between column 3' and guide pot 4' is ensured by a lip seal, not shown, attached to the base of the guide pot.

Les premiers moyens d'entraînement longitudinal sont constitués de deux systèmes 6' à arbres à excentrique, dont les arbres entraînent les têtes de deux bielles en tournant à même vitesse dans des sens opposés. Les pieds des deux bielles sont montés articulés à l'une respective des branches latérales d'une biellette 19 en T, tandis que la branche principale ou tige de la biellette en T est montée articulée à la colonne 3'. Ces premiers moyens d'entraînement longitudinal vertical permettent d'impartir à la colonne 3' un mouvement uniquement en va-et-vient suivant l'axe longitudinal vertical.The first longitudinal drive means consist of two eccentric shaft systems 6', the shafts of which drive the heads of two connecting rods by rotating at the same speed in opposite directions. The feet of the two connecting rods are mounted articulated to a respective one of the side branches of a connecting rod 19 in T, while the main branch or rod of the connecting rod in T is mounted articulated to the column 3'. These first vertical longitudinal drive means make it possible to impart to the column 3' a movement only back and forth along the vertical longitudinal axis.

Il est prévu en outre des deuxièmes moyens d'entraînement transversal sous la forme d'une biellette 8' principale disposée suivant la direction MD. Une extrémité de la biellette 8' est montée articulée au point 17' d'articulation de la partie supérieure de la poutre 2' mobile à la biellette verticale. Il est ainsi imparti à cette poutre mobile 2' un mouvement en va et vient suivant la direction MD, ou sensiblement suivant la direction MD (comme représenté par la double flèche au-dessus de la biellette 8' à la figure 2). L'autre extrémité de la biellette 8' est couplée à un système de commande, appelé système d'avance, qui peut être notamment comme ceux représentés ci-après aux figures 3 à 5.Second transverse drive means are also provided in the form of a main connecting rod 8' arranged in the direction MD. One end of the connecting rod 8' is mounted articulated at the point 17' of articulation of the upper part of the movable beam 2' to the vertical connecting rod. This mobile beam 2' is thus given a back and forth movement in the direction MD, or substantially in the direction MD (as represented by the double arrow above the link 8' at the picture 2 ). The other end of the connecting rod 8' is coupled to a control system, called the advance system, which can be in particular like those represented below in figures 3 to 5 .

Aux figures 3, 3A, 3B, 4A, 4B et 5, il est représenté des modes de réalisation d'un système pouvant être utilisé pour commander le déplacement en va-et-vient suivant la direction MD de la biellette 8 principale du mode de réalisation de la figure 1. Cependant, ce système de commande n'est pas nécessaire en soi et d'autres systèmes de commande du déplacement en va et vient dans la direction MD de la biellette 8 connus dans l'art antérieur peuvent être utilisés, par exemple des systèmes comme ceux décrits dans EP-A1-1736586 , EP-B1-3372716 , FR2738846 , US6161269 et analogues.To figure 3 , 3A , 3B , 4A , 4B And 5 , there are shown embodiments of a system that can be used to control the reciprocating movement in the direction MD of the main link 8 of the embodiment of the figure 1 . However, this control system is not necessary in itself and other control systems for moving back and forth in the direction MD of the link 8 known in the prior art can be used, for example systems such as those described in EP-A1-1736586 , EP-B1-3372716 , FR2738846 , US6161269 and the like.

A la figure 3, le système comporte un arbre à excentrique 21 couplé à une bielle 22 montée articulée directement à un levier 23 vertical d'une seule pièce (ou éventuellement constitué de plusieurs éléments qui ne sont pas articulés entre eux) agencé pivotant par rapport à un axe 24 de pivotement fixe décalé, dans la direction verticale, en dessous de l'axe d'articulation de la bielle 22 au levier 23. Une biellette 27 est couplée directement au levier 23. La biellette 27 est solidaire d'un coulisseau 25 et d'une extrémité d'une tige 26 dont l'axe s'étend parallèlement à l'axe 24.To the picture 3 , the system comprises an eccentric shaft 21 coupled to a connecting rod 22 mounted articulated directly to a vertical lever 23 in one piece (or possibly consisting of several elements which are not articulated together) arranged to pivot relative to an axis 24 fixed pivot offset, in the vertical direction, below the axis of articulation of the connecting rod 22 to the lever 23. A connecting rod 27 is coupled directly to the lever 23. The connecting rod 27 is secured to a slider 25 and to one end of a rod 26 whose axis extends parallel to the axis 24.

La position relative de la tige 26, et donc également de la biellette 27, par rapport à l'axe 24 de pivotement du levier le long de la direction verticale et/ou par rapport à l'axe d'articulation de la bielle 22 au levier peut être réglée par l'intermédiaire d'un système de réglage constitué d'un arbre à excentrique 29 auxiliaire de réglage et d'une biellette 28 de réglage. La biellette 28 de réglage est couplée de manière articulée à son extrémité supérieure à l'arbre à excentrique (ou vilebrequin) 29, tandis que son extrémité inférieure est montée pivotante par rapport à l'axe de la tige 26.The relative position of the rod 26, and therefore also of the link 27, with respect to the pivot axis 24 of the lever along the vertical direction and/or with respect to the axis of articulation of the link 22 at the lever can be adjusted by means of an adjustment system consisting of an eccentric shaft 29 auxiliary adjustment and a rod 28 adjustment. The adjusting rod 28 is articulatedly coupled at its upper end to the eccentric shaft (or crankshaft) 29, while its lower end is pivotally mounted relative to the axis of the rod 26.

Le levier comporte une ouverture en forme de fente 30, dans lequel coulisse le coulisseau 25 solidaire en translation de la tige 26.The lever has an opening in the form of a slot 30, in which slides the slider 25 integral in translation with the rod 26.

En fonction de la position de la biellette 28 qui est déterminée par une rotation appropriée du vilebrequin 29, on peut choisir et régler la position relative du coulisseau 25 dans la fente 30 de manière à régler la distance le long de l'axe vertical du levier entre l'axe 24 et l'axe de la tige 26 (et donc également la distance entre l'axe de la tige 26 et l'axe de la bielle 22), cette distance pouvant être variée entre une valeur nulle (position dans laquelle le coulisseau 25 se trouve en haut de la fente 30 de manière à avoir l'axe de la tige 26 en correspondance avec l'axe 24 et une position de réglage maximum, dans laquelle le coulisseau 25 se trouve tout en bas de la fente 30).Depending on the position of the rod 28 which is determined by an appropriate rotation of the crankshaft 29, one can choose and adjust the relative position of the slider 25 in the slot 30 so as to adjust the distance along the vertical axis of the lever between the axis 24 and the axis of the rod 26 (and therefore also the distance between the axis of the rod 26 and the axis of the connecting rod 22), this distance being able to be varied between a zero value (position in which slider 25 is at the top of the slot 30 so as to have the axis of the rod 26 in correspondence with the axis 24 and a position of maximum adjustment, in which the slider 25 is located at the very bottom of the slot 30).

On peut faire varier l'amplitude du mouvement en va-et-vient de la biellette 27 aussi bien à la marche qu'à l'arrêt, le mouvement répercuté à partir du mouvement du vilebrequin 21 et de la biellette 22 agissant sur le levier 23. Quant à la biellette 27, elle peut être solidarisée ou articulée à la biellette principale du mode de réalisation des figures 1 et 2.The amplitude of the back and forth movement of the link 27 can be varied both when running and when stopped, the movement reflected from the movement of the crankshaft 21 and the link 22 acting on the lever 23. As for the link 27, it can be secured or articulated to the main link of the embodiment of the figure 1 And 2 .

A la figure 3A, il est représenté une variante de l'agencement de la figure 3. Dans cette variante, le réglage de la distance entre la bielle 22 et la biellette 27 d'entraînement s'effectue par réglage de la position le long de la fente 30 de l'axe 31 d'articulation de la bielle 22 sur le levier 23, ce qui permet de régler la distance entre l'axe 31 d'articulation de la bielle 22 et l'axe 24 fixe de pivotement du levier, et donc également de régler la distance entre l'axe 31 et la biellette 27, la distance entre la biellette 27 et l'axe 24 étant, dans cette variante, fixe, alors que dans le mode de réalisation de la figure 3, c'est la distance entre l'axe 31 et l'axe 24 qui est fixe.To the Figure 3A , there is shown a variant of the arrangement of the picture 3 . In this variant, the adjustment of the distance between the connecting rod 22 and the driving connecting rod 27 is carried out by adjusting the position along the slot 30 of the axis 31 of articulation of the connecting rod 22 on the lever 23 , which makes it possible to adjust the distance between the axis 31 of articulation of the link 22 and the fixed axis 24 of pivoting of the lever, and therefore also to adjust the distance between the axis 31 and the link 27, the distance between the link 27 and the axis 24 being, in this variant, fixed, whereas in the embodiment of the picture 3 , it is the distance between the axis 31 and the axis 24 which is fixed.

A la figure 3B, il est représenté une variante de l'agencement de la figure 3. Dans cette variante, le réglage de la distance entre la bielle 22 et la biellette 27 d'entraînement s'effectue par réglage de la position le long d'une fente 30' formée dans le levier 23 de l'axe 24 fixe de pivotement du levier. L'axe 24 du levier est solidaire d'un coulisseau 25' monté coulissant dans la fente 30'. La bielle 22 est articulée au levier 23 suivant un axe 31 d'articulation qui est en position fixe sur le levier 23. L'extrémité d'articulation de la biellette 27 au levier 23 est en position fixe (comme dans le mode de réalisation de la figure 3). De même la tige 26 issue de la biellette 28 de réglage est articulée au levier 23 en position fixe. On peut ainsi, par l'intermédiaire de la biellette 28 régler la position relative de l'axe 24 par rapport au levier 23 et ainsi régler la position relative de la biellette 27 par rapport à l'axe 24 et la position relative de la bielle 22 par rapport à l'axe 24, et donc régler la course de va et vient de la biellette 27, la distance entre la biellette 27 et la bielle 22 étant, dans cette variante, fixe.To the Figure 3B , there is shown a variant of the arrangement of the picture 3 . In this variant, the adjustment of the distance between the connecting rod 22 and the driving rod 27 is carried out by adjusting the position along a slot 30' formed in the lever 23 of the fixed pivot axis 24 of the lever. The axis 24 of the lever is integral with a slider 25' mounted to slide in the slot 30'. The connecting rod 22 is articulated to the lever 23 along an axis 31 of articulation which is in a fixed position on the lever 23. The end of articulation of the connecting rod 27 to the lever 23 is in a fixed position (as in the embodiment of there picture 3 ). Similarly the rod 26 from the rod 28 adjustment is articulated to the lever 23 in a fixed position. It is thus possible, via the rod 28 to adjust the relative position of the axis 24 with respect to the lever 23 and thus to adjust the relative position of the rod 27 with respect to the axis 24 and the relative position of the rod 22 with respect to the axis 24, and therefore adjust the back and forth stroke of the link 27, the distance between the link 27 and the link 22 being, in this variant, fixed.

Aux figures 4A et 4B, il est représenté un autre mode de réalisation. La différence principale entre le mode de réalisation de la figure 3 et celui des figures 4A et 4B est la manière dont on règle la position du coulisseau 25 par rapport à la fente 30.To figure 4A And 4B , there is shown another embodiment. The main difference between the embodiment of the picture 3 and that of figure 4A And 4B is the way in which the position of the slider 25 is adjusted with respect to the slot 30.

Dans ce mode de réalisation, on utilise une came en spirale, constituée d'un disque 40 dans lequel est ménagée une fente en forme de spirale le long de laquelle la tige 26 peut se déplacer. Lors de la rotation du disque 40, la tige 26 suit le profil de la fente 30, ce qui a pour effet de déplacer la tige 26 et donc le coulisseau 25 le long de la fente. En fonction de la position choisie le long de la spirale pour la tige 26, on obtient une course donnée maximale de va et vient pour la biellette 27.In this embodiment, a spiral cam is used, consisting of a disc 40 in which is provided a spiral-shaped slot along which the rod 26 can move. During the rotation of the disc 40, the rod 26 follows the profile of the slot 30, which has the effect of moving the rod 26 and therefore the slider 25 along the slot. Depending on the position chosen along the spiral for the rod 26, a given maximum back and forth stroke is obtained for the link 27.

A la figure 5, il est représenté encore un autre mode de réalisation, dans lequel on utilise un vérin 41 à la place du vilebrequin 29 de la figure 3, le reste du mode de réalisation étant identique.To the figure 5 , there is shown yet another embodiment, in which a cylinder 41 is used instead of the crankshaft 29 of the picture 3 , the rest of the embodiment being identical.

Dans les modes de réalisation décrits aux figures 4A, 4B et 5, on peut prévoir à la place de l'agencement qui y est décrit, dans lequel c'est la distance entre l'axe 24 et la biellette 27 qui est réglée (comme dans la variante de la figure 3), des agencements comme suivant les variantes des figures 3A et 3B.In the embodiments described in figure 4A , 4B And 5 , it is possible to provide instead of the arrangement which is described there, in which it is the distance between the axis 24 and the rod 27 which is regulated (as in the variant of the picture 3 ), arrangements as following the variants of figure 3A And 3B .

Dans la présente description, on a décrit les premiers moyens d'entraînement réalisés à l'aide de deux systèmes à arbres à excentrique pour réaliser un mouvement purement longitudinal de la colonne. D'autres moyens peuvent être envisagés, par exemple un système à vérins ou un arbre à came à excentrique.In the present description, we have described the first drive means made using two eccentric shaft systems to achieve a purely longitudinal movement of the column. Other means can be envisaged, for example a jack system or an eccentric camshaft.

Claims (8)

  1. Needling machine to consolidate a fleece or web of fibres, in particular nonwoven, by needling, comprising:
    - one or more needle plates having an array or bank of needles, respectively;
    - one or more columns with longitudinal axes, in particular vertical, coupled to the needle plate or one respective needle plate;
    - drive systems configured to impart a to and fro motion to each needle plate and/or needles so that the needles have an elliptical path that passes first in one direction, then the other, over the fleece or web of fibres that is moved in front of them in the machine or drive MD direction to consolidate it;
    - a sealed housing containing part of each column and drive system; and
    - one or more guide pots fitted in an opening in the sealed housing, each column passing through the housing through a guide pot by sliding,
    characterised in that,
    the drive system comprises longitudinal drive systems configured to impart to each column a straight to and fro motion parallel to the longitudinal, in particular vertical axis;
    each-needle plate oscillates in relation to its respective column; and
    the drive system comprises a transverse drive system configured to impart at a point on each needle plate or part rigidly connected to each needle plate, a to and fro motion essentially parallel to the MD direction.
  2. Machine according to claim 1, characterised in that the transverse drive system comprises a main tie-rod firstly hinged to the needle plate, or one of the needle plates and secondly coupled to a control system for the to and fro motion essentially parallel to the MD direction, in particular parallel to the MD direction.
  3. Machine according to one of the preceding claims, characterised in that it comprises several columns and several needle plates, and one or more auxiliary hinged tie-rods are fitted between two respective needle plates, or to parts rigidly connected to two respective plates.
  4. Machine according to claim 3, characterised in that the hinge points to the first plate or to the part rigidly connected to the first plate of the main tie-rod and the auxiliary tie-rod are combined.
  5. Machine according to one of the preceding claims, characterised in that the oscillation of each needle plate in relation to the column or each respective column is achieved by an intermediate respective tie-rod interposed between each column and the needle plate or each needle plate.
  6. Machine according to claim 5, characterised in that each intermediate tie-rod is hinged at its upper end to the respective column and at its lower end to the respective needle plate or a part rigidly connected to the respective needle plate.
  7. Machine according to one of the preceding claims, characterised in that each guide pot is fixed in relation to the housing.
  8. Machine according to one of the preceding claims, characterised in that the longitudinal drive systems are enclosed in a sealed housing and the transverse drive system is outside the housing.
EP21169004.5A 2020-04-23 2021-04-16 Elliptic needle loom with sealed housing and box for guiding the crossmember Active EP3901348B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2004058A FR3109588B1 (en) 2020-04-23 2020-04-23 Elliptical needling machine with sealed casing and crossing guide pot

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EP3901348A1 EP3901348A1 (en) 2021-10-27
EP3901348B1 true EP3901348B1 (en) 2023-07-12
EP3901348C0 EP3901348C0 (en) 2023-07-12

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US (1) US11499256B2 (en)
EP (1) EP3901348B1 (en)
KR (1) KR20210131254A (en)
CN (1) CN113550078A (en)
FR (1) FR3109588B1 (en)
TW (1) TW202146731A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202020106554U1 (en) * 2020-11-16 2022-02-17 Autefa Solutions Austria Gmbh needle machine

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3849845A (en) * 1973-09-20 1974-11-26 Fehrer Textilmasch Apparatus for needle-punching a web
AT400152B (en) * 1994-04-28 1995-10-25 Fehrer Textilmasch DEVICE FOR NEEDING A FLEECE
FR2727990A1 (en) * 1994-12-08 1996-06-14 Asselin SLIDING ROD NEEDLE
FR2729405B1 (en) * 1995-01-12 1997-04-18 Asselin ALTERNATIVE ACTUATION DEVICE AND NEEDLE EQUIPPED THEREWITH
US5732453A (en) 1995-09-15 1998-03-31 Oskar Dilo Maschinenfabrik Kg Needle bar driving apparatus of a needle loom
DE19730532A1 (en) 1997-07-16 1999-01-21 Dilo Kg Maschf Oskar Needle machine
AT406390B (en) * 1998-03-31 2000-04-25 Fehrer Textilmasch DEVICE FOR NEEDING A FLEECE
GB2335931B (en) * 1998-03-31 2002-03-20 Fehrer Textilmasch Apparatus for needling a web
ATA160899A (en) * 1999-09-21 2000-09-15 Fehrer Monika Mag DEVICE FOR NEEDING A PATTERNED FELT
AT408234B (en) * 1999-10-08 2001-09-25 Fehrer Textilmasch DEVICE FOR NEEDING A FLEECE
AT408235B (en) * 1999-10-29 2001-09-25 Fehrer Textilmasch DEVICE FOR NEEDING A FLEECE
FR2862988B1 (en) * 2003-11-28 2007-11-09 Fehrer Textilmasch DEVICE FOR NEEDLING A FIBER MATTRESS
AT413387B (en) * 2004-03-31 2006-02-15 Fehrer Textilmasch DEVICE FOR NEEDING A FLEECE
FR2887563B1 (en) 2005-06-22 2009-03-13 Asselin Soc Par Actions Simpli "METHOD AND INSTALLATION FOR NEEDING A FIBER TABLE WITH TWO NEEDLE BOARDS"
FR2887564B1 (en) * 2005-06-22 2007-10-26 Asselin Soc Par Actions Simpli CLAMPING APPARATUS FOR CONSOLIDATING A FIBER TABLE
EP2475814B1 (en) * 2009-09-09 2014-03-26 Hi Tech Textile Holding GmbH Device for needling a fibrous web
EP3372716B1 (en) 2017-03-09 2019-09-04 Oskar Dilo Maschinenfabrik KG Needling machine

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Publication number Publication date
FR3109588B1 (en) 2022-10-14
FR3109588A1 (en) 2021-10-29
CN113550078A (en) 2021-10-26
US20210332513A1 (en) 2021-10-28
EP3901348A1 (en) 2021-10-27
US11499256B2 (en) 2022-11-15
KR20210131254A (en) 2021-11-02
TW202146731A (en) 2021-12-16
EP3901348C0 (en) 2023-07-12

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